CN217849508U

CN217849508U - 3D prints honeycomb lattice structure

Info

Publication number: CN217849508U
Application number: CN202221860028.9U
Authority: CN
Inventors: 许方雷; 张淑琴
Original assignee: Beijing Slt Technology Co ltd
Current assignee: Beijing Slt Technology Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-18
Anticipated expiration: 2032-07-19

Abstract

The utility model discloses a 3D prints honeycomb lattice structure, the lattice unit includes the unit upper portion that is close to the upper surface of virtual cuboid and the unit lower part that is close to the lower surface of virtual cuboid, and the lattice roof beam includes the first lattice roof beam that constitutes unit upper portion, constitutes the second lattice roof beam of unit lower part and connects unit upper portion and the third lattice roof beam of unit lower part; the upper part of the unit comprises a central part, the central part comprises six first lattice beams which are connected end to end, the projection of the central part on the upper surface of the virtual cuboid is hexagonal, and the first lattice beams which extend outwards are respectively arranged at the hexagonal parts of the central part; the first lattice beams respectively form an inclination angle with the upper surface of the virtual cuboid, and the intersection of the first lattice beams forms a near-end intersection point close to the upper surface of the virtual cuboid and a far-end intersection point far away from the upper surface of the virtual cuboid. The utility model discloses the realization possesses the biggest space area with minimum material, and structural stability is good, and impact resistance is strong, and the resiliency is good.

Description

3D prints honeycomb lattice structure

Technical Field

The utility model belongs to the technical field of the lattice structure technique and specifically relates to a 3D prints honeycomb lattice structure is related to.

Background

3D printing is a rapid prototyping technique, which is a technique that constructs an object by printing layer by layer using an adhesive material, such as powdered metal or resin, based on a digital model file. The possibility of using a complex lattice structure to prepare various parts and products is realized through an advanced production method of 3D printing, and different lattice structures can be integrated into the design through modes of repetition, combination, splicing and the like, so that different functions and appearances are realized. The lattice structure can be varied in microcosmic and macroscopic aspects, different lattice structures and lattice structures printed by different materials can show completely different mechanical properties, so that how to design a 3D printing product through the shape, size, hierarchical structure and material composition of the lattice is an important technical problem to maximally improve the product performance.

The atoms inside the crystal are arranged according to a certain geometric rule. For ease of understanding, when an atom is considered to be a sphere, a crystal is a substance formed by regularly stacking small spheres. In order to visually represent the law of the arrangement of atoms in the crystal, atoms can be simplified into one point, and the points are connected by a hypothetical line to form a space lattice with obvious regularity. Such a space lattice, which represents the regular arrangement of atoms in a crystal, is called a lattice.

The crystallography lattice is a geometric figure which embodies the common periodicity of ions, atoms, molecules and the like in a crystal structure in three-dimensional space distribution. Three mutually non-coplanar basis vectors reflecting the three-dimensional periodicity of the crystal structure are linearly combined with integers m, n and p to obtain a translation vector group (m, n, p =0, +/-1, +/-2 \8230;), and all vectors are acted on the dot origin one by one, so that a three-dimensional space dot matrix formed by vector end points can be derived. The lattice and the corresponding translational group are respectively a geometrical form and an algebraic form reflecting the periodicity of the crystal structure. If the adjacent lattice points are connected by the line segments corresponding to the basis vectors, the lattice corresponding to the crystal structure is derived.

The existing supporting structure made of a single lattice structure such as a pyramid structure, a tetrahedron structure and the like is insufficient in damping effect, structural stability and supporting capability.

SUMMERY OF THE UTILITY MODEL

To the technical problem that exists, the utility model discloses an aim at: the 3D printing honeycomb lattice structure is light in weight, small in material consumption, high in strength, and good in impact resistance and buffering performance.

In order to achieve the above object, the utility model provides a following technical scheme:

A3D printing honeycomb lattice structure comprises lattice units, wherein the lattice units are arranged in a virtual cuboid and comprise a plurality of lattice beams; the lattice unit comprises a unit upper part close to the upper surface of the virtual cuboid and a unit lower part close to the lower surface of the virtual cuboid, and the lattice beam comprises a first lattice beam forming the unit upper part, a second lattice beam forming the unit lower part and a third lattice beam connecting the unit upper part and the unit lower part; the upper part of the unit comprises a central part, the central part comprises six first lattice beams which are connected end to end, the projection of the central part on the upper surface of the virtual cuboid is hexagonal, and the first lattice beams which extend outwards are arranged at the hexagonal positions of the central part respectively; the first lattice beams respectively form an inclination angle with the upper surface of the virtual cuboid, and the intersection positions of the first lattice beams form a near-end intersection point close to the upper surface of the virtual cuboid and a far-end intersection point far away from the upper surface of the virtual cuboid; the lower part of the unit is in mirror symmetry with the upper part of the unit, and the third lattice beam is connected with a far-end intersection point of the upper part of the unit and a corresponding point of the lower part of the unit.

Preferably, a plurality of the lattice units are connected to form the lattice structure.

Preferably, the third lattice beam connects intersection points close to each other when the lattice cells overlap up and down.

Preferably, the first lattice beam, the second lattice beam and the third lattice beam are connected end to end on the side surface of the virtual rectangular parallelepiped to form a projection which is a hexagon.

Preferably, the first lattice beam, the second lattice beam and the third lattice beam have the same length.

Preferably, the diameter of the lattice beam is 1.2mm to 2mm.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model discloses 3D prints honeycomb lattice structure's lattice unit arranges a virtual cuboid in, the lattice unit includes the unit upper portion that is close to the upper surface of virtual cuboid and the unit lower part that is close to the lower surface of virtual cuboid, unit upper portion includes the central part, the central part includes six end to end's first lattice beam, the projection of central part on the upper surface of virtual cuboid is the hexagon, the hexagonal punishment of central part do not is provided with the first lattice beam of outside extension, unit lower part and unit upper portion mirror symmetry, the nodical and unit lower part of distal end on third lattice beam connected cell upper portion, form cellular structure, realize with minimum material, possess the biggest space area, structural stability is good, impact resistance is strong, and the cushioning property is good.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

fig. 1 is a perspective view of a lattice unit of a 3D printed honeycomb lattice structure of the present invention;

fig. 2 is a front view of a lattice unit of the 3D printed honeycomb lattice structure of the present invention;

fig. 3 is a top view of a lattice unit of the 3D printed honeycomb lattice structure of the present invention;

fig. 4 is a left side view of a lattice unit of the 3D printed honeycomb lattice structure of the present invention;

fig. 5 is a perspective view of the 3D printed honeycomb lattice structure of the present invention.

Wherein: 1. a lattice unit; 21. a first lattice beam; 22. a second lattice beam; 23. a third lattice beam; 3. a near end intersection point; 4. a distal intersection point.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

As shown in the attached figure 1, the utility model discloses 3D prints honeycomb lattice structure, including lattice unit 1, lattice unit 1 is arranged in a virtual cuboid, and lattice unit 1 includes a plurality of lattice roof beams. The lattice cell 1 includes a cell upper portion near the upper surface of the virtual rectangular parallelepiped and a cell lower portion near the lower surface of the virtual rectangular parallelepiped, and the lattice beams include a first lattice beam 21 constituting the cell upper portion, a second lattice beam 22 constituting the cell lower portion, and a third lattice beam 23 connecting the cell upper portion and the cell lower portion. The upper part of the cell comprises a central part, the central part comprises six first lattice beams 21 connected end to end, as shown in fig. 3, the projection of the central part on the upper surface of the virtual cuboid is hexagonal, the first lattice beams 21 extending outwards are respectively connected to the hexagonal parts of the central part, and the first lattice beams 21 extending outwards form a shape which can be connected with the corresponding first lattice beams 21 in other lattice cells 1 to form a hexagonal projection.

As shown in fig. 2 and fig. 4, the first lattice beams 21 respectively form an inclination angle with the upper surface of the virtual cuboid, and the intersection of the first lattice beams 21 forms a near-end intersection point 3 close to the upper surface of the virtual cuboid and a far-end intersection point 4 far away from the upper surface of the virtual cuboid, so that the structure is more three-dimensional. The lower part of the unit is in mirror symmetry with the upper part of the unit, and the third lattice beam 23 connects the far-end intersection point 4 of the upper part of the unit with the corresponding point of the lower part of the unit to form a honeycomb-like structure which can use the least material, occupies the largest space area and has the best structural stability. As shown in fig. 5, a plurality of lattice units 1 are connected to form a lattice structure, and when the lattice units 1 are overlapped up and down, the third lattice beams 23 are connected to the intersection points close to each other, so as to form a three-dimensional shape in space, as shown in fig. 2, the first lattice beam 21, the second lattice beam 22, and the third lattice beam 23 are connected end to form a projection of a hexagon on the side surface of the virtual rectangular parallelepiped. The first lattice beam 21, the second lattice beam 22 and the third lattice beam 23 are equal in length, and the diameter of each lattice beam is preferably 1.2mm to 2mm. The structure with continuous arrangement has excellent compression resistance, bending resistance and ultra-light weight characteristics, and compared with the same type of solid materials or other structures, the strength-weight ratio and the rigidity-weight ratio are both highest.

The utility model discloses 3D prints honeycomb lattice structure can pile up the back through 3D printing's lattice unit 1 and cut into the shape that needs, and this kind of structure can possess the biggest space area with minimum material, and structural stability is the best moreover. Compared with other structures, the closed hexagonal equilateral honeycomb structure can obtain the maximum stress with the least materials, when the honeycomb structure is subjected to a load perpendicular to a plate surface, the bending rigidity of the honeycomb structure is almost the same as that of a solid plate made of the same material and having the same thickness, even higher than that of the solid plate, but the weight of the honeycomb structure is light by 70-90 percent, and the honeycomb structure is not easy to deform, crack and break, has the advantages of shock absorption, sound insulation, heat insulation, extremely high weather resistance and the like. The infinitely-associated honeycomb lattice structure is adaptive to various scene application requirements, and has multiple advantages of light weight, less material consumption, high strength, smooth surface, difficult deformation, strong impact resistance, good buffering property, sound insulation, heat absorption and the like. The method can be applied to products such as soles, cushions, helmets, bicycle parts and the like, and can also be combined and spliced with other dot matrix unit structures to realize different functions in different areas.

The physical property test is carried out on the embodiment comprising the technical scheme, the 3D printing honeycomb lattice structure sample block of the embodiment is formed by integrally printing a 3D printing photocuring technology (SLA) and a raw material liquid photosensitive resin by a 3D printing device, the sample block is 10cm multiplied by 2cm square, and the compression deformation of the obtained sample block is 22 percent and can reach the range of 10 to 20 percent in some cases; resilience greater than 42%, and in some cases greater than 50% can be achieved; the hardness (durometer AskerC) of the block is 54 to 80, depending on the thickness of the connecting rod and the type of product applied; the block has a tensile strength of at least 11kg/cm, an elongation at break of from 300% to 500%, usually higher than 380%, and a tear strength of 12kg/cm.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transformation that the content of the specification does, or directly or indirectly use in other related technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. A 3D printed honeycomb lattice structure comprising lattice cells, characterized in that: the lattice unit is arranged in a virtual cuboid and comprises a plurality of lattice beams; the lattice unit comprises a unit upper part close to the upper surface of the virtual cuboid and a unit lower part close to the lower surface of the virtual cuboid, and the lattice beam comprises a first lattice beam forming the unit upper part, a second lattice beam forming the unit lower part and a third lattice beam connecting the unit upper part and the unit lower part; the upper part of the unit comprises a central part, the central part comprises six first lattice beams which are connected end to end, the projection of the central part on the upper surface of the virtual cuboid is hexagonal, and the first lattice beams which extend outwards are arranged at the hexagonal positions of the central part respectively; the first lattice beams respectively form an inclination angle with the upper surface of the virtual cuboid, and the intersection positions of the first lattice beams form a near-end intersection point close to the upper surface of the virtual cuboid and a far-end intersection point far away from the upper surface of the virtual cuboid; the lower part of the unit is in mirror symmetry with the upper part of the unit, and the third lattice beam is connected with a far-end intersection point of the upper part of the unit and a corresponding point of the lower part of the unit.

2. The 3D printed honeycomb lattice structure of claim 1, wherein: and a plurality of the lattice units are connected to form the lattice structure.

3. The 3D printed honeycomb lattice structure of claim 2, wherein: and when the lattice units are overlapped up and down, the third lattice beams are connected with the intersection points close to each other.

4. The 3D printed honeycomb lattice structure of claim 1, wherein: the first lattice beam, the second lattice beam and the third lattice beam are connected end to form a projection on the side face of the virtual cuboid, wherein the projection is hexagonal.

5. The 3D printed honeycomb lattice structure of claim 1, wherein: the lengths of the first lattice beam, the second lattice beam and the third lattice beam are equal.

6. The 3D printed honeycomb lattice structure of claim 1, wherein: the diameter of the lattice beam is 1.2mm-2mm.